Signal arrangement for automobiles



July 15, 1930. I J, BQLIN 1,770,835

SIGNAL ARRANGEMENT FOR AUTOMOBILES Filed March 9, 1928 //VVE/V70R (John Fj olin ATTORNEY Patented July 15, 1930 UNITED STATES JOHN FBITIOF BOLIN, or srocxsonn, SWEDEN SIGNAL ARRANGEMENT FOR AUTOMOBILES Application filed March 9, 1928, Serial No. 260,307, and in Sweden June 15, 1926. i

This invention relatesto a signal-arrangement for automobiles, constructed in such a way that all the signals (optical and acoustic) can each separately be connected or disconnected by means of one and the same current switch.

In the accompanying drawing Fig. 1 shows the current switch seen from above, Fig. 2 a side view and Fig. 3 a diagram of connections for the entire arrangement.

The arrangement includes a current switch, signal-horn, signal-lights and an electric current source and wires for connecting these parts to each other. r

The current switch is made of an insulated base plate 1 on which are arranged eight pairs of contact springs 2, 3, 4, 5, 6, 7, 8, 9. These pairs of contacts are arranged symmetrically two and two along two axes lying at right angles in relation to each other. Di-

rectly over the crossing point of said axes a bearing case 10 is arranged, which bearing case is supported by feet 11 fastened in the base plate 1. The bearing case 10 encases a ball shaped member 12 on a contact pin 14 provided with a handle and arranged to be able to close contacts between the contacts of the respective contact pairs. The bearing case 10 is provided with guiding grooves '15, which only allow that the contact in is swung in planes through the axes at rig t angles to each other. The one contact of the one contact pair 2 is provided with a contact tongue 16, which when the contact pin closes the contact between the contacts of the other corresponding pair of contacts, a contact closing is also caused between the one contact of the contact pair 2 and the contact pair 6.

All the pairs of contacts except the contact 4 pair 6 are with their one contact connected to the positive pole of a current source 17, for instance a storage battery. The one contact of the contact pair 6 on the contrary is connected to the positive pole of the current source, first when the contact pin 14 actuates the contact tongue 16. The other contacts of the contact pairs lying nearest the centre are connected to the negative pole of the current source over a signal horn 18. The one contact of the rear outer contact pair 6 is connected to the negative pole of the current source 17 over the signal lamps 19 and 20 connected in series, the one lamp 19 of which is arranged to the left on the back of the automobile and the other 20 is arranged to the left on thefront of the automobile, and

its other contact is connected to the negative pole of the current source over the signal lamps 21, 22 connected in series, the one lamp 21 of which is arranged to the right on the back of the automobile and the other 22 is arranged to the right on the front of the automobile. The other contact of the outer left contact pair 9 is connected to the negative pole of the current source over the signal lamps 21, 22, the other Contact of the outer right contact pair 7 is connected to the negative pole of the current source over the signal lamps 19, 20. The other contact of the outer forward contact pair Sis connected to the negative pole of the current source over a signal lamp 23, which is arranged at the back on the automobile. The signal lamps 19, 20, 21, 22 are provided with green glass and the signal lamps 20 and 22 are provided as well with red side glass. The signal. lamp 25 is provided with red glass.

The manner of working of the arrangement is as follows:

lVhcn the handle of the contact pin 14 is moved forwards, the contact pin first closes at the contact pair 2 a current circuit over the signal horn 18 and thereafter at the contact pair 8 and the contact tongue 16 closes a current circuit over the signal lamps 19, 20 and a current circuit over the signal lamps 21, 22, and thereby is indicated starting, change of speed, or that a cross street will be passed. lVhen the handle of the contact pin 14 is moved to the left the contact pin first closes at the contact pair 3 a current circuit over the signal horn 18 and thereafter at the contact pair 7 current circuit over the signal lamps 19, 20, whereby is indicated that the automobile will turn to the left. When the handle of the contact pin 14 is moved to the right, the contact pin closes first at the contact pair 5 a current circuit over the signal horn 18 and thereafter at the contact pair 9 a current circuit over the signal lamps 21, 22

whereby is indicated that the automobile will turn to the right. When the handle of the contact pin is moved backwards, the contact pin closes first at the contact pair 4 a current circuit over the signal horn 18 and thereafter at the contact pair 8 a current circuit over the signal lamp 23, whereby is indicated, that the speed of the automobile will be lessened or that the automobile will be stopped.

As is evident there will, by the shown embodiment, be sent out a signal by the signal horn for each indication of the driving.

Having now described my invention, What I claim as new and desire to secure by Letters Patent is t In a circuit closer, a fiat non-conducting base, a casting having a plurality of upstanding legs arranged radially on the base and a universal housing formed with the upper ends of the legs, a universal ball mounted in the housing, a contact depending from the ball, and pairs of contacts supported on the base between the legs, any pair of which being' engageable by the first-mentioned contact to complete a selected electric circuit.

In witness whereof, I have hereunto signed my name.

JOHN FRITIOF BOLIN. 

